ANSWER
The temperature at which it boils is a measure of its physical property
STEP-BY-STEP EXPLANATION:
Firstly, we need to define the physical and chemical property of matter
The physical property of matter is characteristic of matter that is not associated with a change in its chemical composition. The physical properties include; <em>color, density, hardness, melting, and boiling point.</em>
The chemical property of matter is characteristic of matter that is associated with a change of matter from one type to another type. The chemical properties include; <em>Flammability, toxicity, acidity, reactivity, etc.</em>
When a liquid is boiled, it changes its state from liquid to vapor, this change of state is associated with the physical property of matter.
Hence, the temperature at which it boils is a measure of its physical property
Answer:
Light waves are the fastest in existince.
Answer:
3.0 moles of water
Explanation:
Having the balanced equation of water production
2H2 (g) + O2 (g) -----> 2H2O (g)
Given that 3.0 moles of hydrogen gas reacts with 1.8 moles of oxygen gas
from the 2 moles of hydrogen are required to react with 1 mole of oxygen
1.8 moles of oxygen,requires 1.8 mol O2 x 2 mol H2/ 1 mol O2 = 3.6 mol H2
this means that H2 is the limiting reagent while oxygen is in excess,thus we use the moles of H2 to find the ,moles of water produced.
from the equation, 2 moles of H2 produces 2 moles of H2O
moles of H2O = 3.0 mol H2 x 2 mol H2O/ 2mol H2 = 3.0 molH2O
Therefore 3.0 moles of water are produced.
The number of moles is given by:
Mass of hydrogen, = (given)
Molar mass of hydrogen, =
Number of moles of hydrogen, =
Reaction between to form is:
From the reaction it is clear that 3 moles of hydrogen gives 2 moles of ammonia and 1 mole of nitrogen gives 2 moles of ammonia .
So, of gives:
Number of moles of ammonia, =
Since, in one mole of ammonia, there are molecules of ammonia, .
So, number of molecules in of ammonia, is:
Hence, the number of molecules of ammonia produced by of is .